Top answers

Maths
A Level

Differentiate a^x with respect to x

y=a^x

take natural logs (also written as ln or log base e) of both sides

lny=lna^x

by logarithms rules lna^x=xlna

lny=xlna

Now diff...

JM
Answered by James M. • Maths tutor
41944 Views

How do I do integration by substitution?

There are a number of integrals that we can evaluate directly, called elementary functions:integral[x dx] = x2/2 + Cintegral[cos(x) dx] = sin(x) + C...

MT
Answered by Matthew T. • Maths tutor
5460 Views

Differentiate the function y=(6x-1)^7

Problems of this style are solved using the chain rule.

To begin, define the quantity inside the brackets as u

u = 6x-1

JL
Answered by Jamie L. • Maths tutor
4593 Views

Which A-level modules did you take?

C1, C2, C3, C4

M1, M2, M3

S1, S2, S3

FP1, FP2

MW
Answered by Michael W. • Maths tutor
4793 Views

Show that 2sin(2x)-3cos(2x)-3sin(x)+3=sin(x)(4cos(x)+6sin(x)-3)

When proving trigonometric identites, we must show that the left hand side of the equation = the right hand side. Here we will start with the left hand side (LHS) and show that it is equivalent to the rig...

JB
Answered by Joe B. • Maths tutor
15380 Views

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